

# a=10;
# print(type(a));
#
# b=1.1;
# print(type(b));
# b=100;
# print(type(b));
# b=True;
# print(type(b));
#
# c=100000000000000000000000000000000000000000000000000000000000000000000000000011111000000000000000000000000000000000000000000000000000000000000
# 11111111111111111111111111111111111111111111111111111111100000000000000000000000000000000000000000000000000000000000000000000000000000000000000
# 1111;
# print(type(c));

# d=12.00020000000000000000000023243322222222222222222222222222222222222222;
# print(type(d));

s="hello"
print(type(s))

s2='world'
print(type(s2))

str1="good"
str2="night"
print(str1+str2)


a="hello"
print(f"a={a}")#f->format 格式化打印

x1=10
x2=20
x1,x2=x2,x1
print(x1,x2)
